Apparatus for pumping water.



S. M. STEVENS. APPARATUS FOR PUMPING WATER.

APPLICATION FILED 18133.27, 1910.

Patented 0013. 18.1910.

.11: WASHINGTCN, D c.

SIDNEY IVI. STEVENS, OF PRINCE GEORGE, VIRGINIA, ASSIGNOR OF ONE-HALE TOGRANT CHASE, OF PRINCE GEORGE, VIRGINIA.

APPARATUS FOR PUMPING WATER.

To all whom it may concern:

Be it known that I, SIDNEY M. STEVENS, a citizen of the United States,residing in Prince George, in the county of Prince George and State ofVirginia, have invented a new and useful Improvement in Apparatus forPumping Water, of which the following is a specification.

This invention relates to the construction of apparatus for raisingwater, and its object has been to provide an inexpensive construction ofautomatic apparatus adapted to raise the water in cases where onlylimited volume is needed.

The invention is fully described below, and also illustrated in theaccompanying drawing in which,

Figure 1 is a vertical section of the apparatus and Fig. 2 a section onthe line 22 of Fig. 1.

In said drawing I show a novel construction of pumping apparatus incombination with a hydraulic ram for operating the same. This hydraulicram may be of any known construction, and the one shown is a formillustrated in Knights Mechanical Dictionary. In it the water passesfrom a reservoir or source of supply 3, through the pipe 4 at the lowerend of which is a check valve 5, serving as a waste valve to theapparatus. When the water closes this valve, it spends its energy inforcing a portion of itself into the air chamber 6, thus relieving someof the pressure at the valve so that it drops and causes a resumption ofthe movement through pipe 4 until the valve is again lifted, when thesame operations are repeated. The chamber 6 communicates by pipe 7 witha casing 8 in which is located the pumping apparatus now to bedescribed. Thls casing is horizontally arranged as shown and is dividedby a horizontal diaphragm 9 into up per and lower chambers 10 and 11. Ofthese the lower chamber receives the water from pipe 7, and the upperone receives the water which is to be pumped through a pipe 12. The pipe12 is joined to a tee 13, one end of which connects with a pipe laleading from a spring or other source of supply, and the other end ofthe tee is joined to a pipe 15 leading to the point at which the waterfrom the spring is to be used or delivered. The pipe 14: is providedwith a check valve 16 adapted to admit the water freely to the pipe butalso adapted to prevent any return of Specification of Letters Patent.

' Application filed April 27, 1910.

Patented Oct. 18, 1910. Serial No. 557,983.

the water, and pipe 15 is likewise provided with a check valve 17adapted to permit the passage of the water to the point of destination,but also adapted to prevent the water after it has moved beyond saidvalve from returning.

The diaphragm 9 is flexible and adapted to yield to the pressure of thewater upon its fiat faces and it is accompanied upon both faces withassisting springs. The spring above the diaphragm is indicated at 18 andthe one below it is indicated at 19. Both are made from fiat metal bentinto U shape, and the former is secured to the top of the casing by thescrew 20 passing through the shorter limb of the spring, and the lowerspring 19 is secured in like manner to the bottom of the casing by thescrew 21 also passing through the shorter limb of the spring.

Vith the construction described, the operation is substantially asfollows: The water from the spring enters through valve 16 and fillspipe 1 1 and the upper chamber 10 of the pumping casing, depressing thediaphragm to a greater or less extent, and forcing it against the spring19. The ram now acts by creating superior pressure on the underside ofthe diaphragm and raising it. In so doing the water above the diaphragmis lifted, compelling the closing of the valve 16 so that no more watercan enter. At the same time the greater or less part of the water thenaccumulated above the diaphragm is expelled through valve 17, and senton its way to the point of delivery. As soon as the ram reacts, thepressure from the water caused by it ceases and the diaphragm falls toits normal position, thereby permitting the water to again enter atvalve 16, and to fill the space just vacated by that which was expelled.These operations are repeated as long as the ram is continued in action.

It will be noted that the screws 20 and 21 which support the springs 18and 19, are adapted to position said springs at different distances fromthe diaphragm, so that the action of the springs may be lessened orincreased as occasion requires. This enables me to regulate thesesprings, so as to adapt the apparatus to use in cases not only where thespring water is under considerable pressure as it enters but also incases where there is no pressure upon it. If there is pressure upon it,the springs are adjusted so as to put greater tension upon the lowerspring and slacken that upon the upper one. It will also be noted thatthe spring water which is pumped, does not become mixed with oradulterated by the water used in the ram. Indeed the latter may be Verymuch inferior to the former.

The apparatus described is adapted to exert a suction force on the waterbeing pumped, so that it is adapted not only to draw the water intoitself in the absence of any pressure upon the water, but also to raisethe water from awell or other source lower than itself.

I claim 1. The apparatus for pumping water consisting of a water holdingcasing, a flexible diaphragm dividing said easing into two compartments,a water supplying and discharging pipe communicating with one of saidcompartments, ahydraulic ram communicating with the other of saidcompartments and serving to actuate said diaphragm, and assistingsprings at each side of said diaphragm.

2. The apparatus for pumping water consisting of a Water holding casing,a flexible diaphragm dividing said casing into two compartments, a watersupplying and discharging pipe communicating with one of saidcompartments, a hydraulic ram communicating with the other of saidcompartments and serving to actuate said diaphragm, and assistingsprings at each side of said diaphragm, said assisting springs beingadjustable.

3. The apparatus for pumping water consisting of a water holding casing,a flexible diaphragm dividing the casing into two compartments, a watersupply pipe opening into one of said compartments, a hydraulic ramcommunicating with the other compartment and supplying power to operatethe diaphragm, and adjusting springs at each side of said diaphragm,said springs being independently adjustable in both directions.

SIDNEY M. STEVENS.

\Vitnesses WV. E. ARMSTRONG, V. M. CAMPBELL.

